my @testarray;
open(DATA, 'test.txt') or die $!;
while(<DATA>) {
   chomp; #remove trailing \n
   push @testarray, [split ',', $_]; #[] makes anonymous 
      # array with values from split, pushed on in order...
      # could use unshift if you wanted them reversed
}
close DATA;
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That's about it... pretty straightforward
Update Damn that Merlyn... :) Well... mine has more comments :)
                - Ant